Currently Float & Double do not have standard Bounded instances.  Is there any reason not to use the following?

instance Bounded Float  where { minBound = -1/0; maxBound = 1/0 }
instance Bounded Double where { minBound = -1/0; maxBound = 1/0 }

If I don't hear objections, I'll submit a ticket and re-send a proposal note.

- Conal